Onestream System Administrator
Employer: Sophos
Location: Sophos operates a remote-first working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach. While we are a remote first organization, applicants must have legal authorization to work in the jurisdiction where the position is posted, without requiring employer sponsorship.
Working hours: Full time
Salary: Not listed
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Sophos is a global leader and innovator of advanced security solutions for defeating cyberattacks. The company acquired Secureworks in February 2025, bringing together two pioneers that have redefined the cybersecurity industry with their innovative, native AI-optimized services, technologies and products. Sophos is now the largest pure-play Managed Detection and Response (MDR) provider, supporting more than 28,000 organizations. In addition to MDR and other services, Sophos’ complete portfolio includes industry-leading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Sophos Central platform. Secureworks provides the innovative, market-leading Taegis XDR/MDR, identity threat detection and response (ITDR), next-gen SIEM capabilities, managed risk, and a comprehensive set of advisory services. Sophos sells all these solutions through reseller partners, Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) worldwide, defending more than 600,000 organizations worldwide from phishing, ransomware, data theft, other every day and state-sponsored cybercrimes. The solutions are powered by historical and real-time threat intelligence from Sophos X-Ops and the newly added Counter Threat Unit (CTU). Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com.
ROLE SUMMARY
This position will report to the Global Accounting Compliance Controller and will be responsible for maintaining and managing the Onestream system. You will be responsible for ensuring the integrity, performance, and reliability of the system, troubleshooting and resolving system issues, while also supporting end users and driving enhancements to meet evolving business needs.
Working closely with Finance and IT teams, the Onestream Administrator will contribute to the continuous improvement of financial control and reporting processes, ensuring data accuracy, compliance, and operational efficiency. This includes leveraging automation and emerging AI capabilities, within Onestream and complementary tools, to enhance data quality, streamline workflows, and improve user experience.
The role will also be responsible for producing documentation, developing and delivering user training and driving strategic roadmap development to ensure alignment with business objectives and system evolution.
The role has no direct reports but will be supported by another team member who will assist with day-to-day and BAU (business-as-usual) system administration tasks.
What you will do
System administration:
Metadata management
User management (set up, disablement, access controls etc)
Manage system configuration
Maintain and support manual and automated interfaces and integrations e.g. with SAP
Data management, including data loading, validation and reconciliation processes to ensure accuracy across entities and reporting hierarchies
System monitoring and issue resolution – oversee daily system operations, identify, troubleshoot and resolve system issues promptly to ensure smooth operations
Identify opportunities to apply automation or AI-driven controls to enhance accuracy, improve data validation, or reduce manual effort where appropriate
User training and support:
Act as first point of contact for user queries
Responsible for managing the JIRA ticketing system
Provide structured user onboarding, training and ongoing knowledge sessions
Use AI-enabled tools to enhance training materials, user communications, and documentation where beneficial
Process improvement and roadmap development:
Identify and implement opportunities to optimize system usage and streamline existing processes
Keep up to date with emerging developments and trends in the Onestream Solution Exchange with a view to optimize Sophos processes by leveraging the latest functionality
Collaborate with stakeholders to define and maintain a Onestream roadmap, ensuring enhancements align with strategic business priorities
Evaluate and integrate emerging AI capabilities, such as predictive analytics, automated reconciliations, workflow optimization, and intelligent reporting, into the roadmap where relevant
Other:
Reporting & Analysis: Support the design, development, and maintenance of Onestream reports, dashboards, and templates for reporting. Contribute to opportunities to incorporate AI-assisted insights where appropriate
Upgrades & Enhancements: Assist with system upgrades, testing, and deployment of new features or modules, including those involving automation or AI functionality
Collaboration: Work closely with Finance, IT, and external consultants to ensure the system supports compliance, control, and operational excellence.
Documentation: Develop and maintain comprehensive system and process documentation, including user guides, change logs, and configuration records; use AI tools to improve clarity, version control, and efficiency of documentation workflows
Maintain up to date knowledge of Onestream.
Actively participate in internal AI and digital finance learning programs.
Attend relevant workshops, industry forums and professional development events to stay informed of best practices and emerging technologies in finance automation.
Holiday restrictions apply at month-ends, quarter ends and financial year end.
What you will bring
Essential
Experience in Onestream system administration
Proficient in Excel and other Office 365 applications
Understanding of accounting concepts and principles
Knowledge of core financial processes and best practices
Demonstrated ability to troubleshoot and resolve system issues with the ability to communicate technical concepts to non-technical users
Business partnering experience and managing various stakeholder relationships
Experience in user training and system roadmap development
Experience documenting processes and procedures
Excellent troubleshooting and problem solving skills
Degree level or equivalent
Desirable
Exposure to AI- or automation-enabled finance tools.
Exposure to other various systems – experience of SAP would be an advantage
Working within a software company, ideally a global organisation and as part of a global finance team supporting global actions and initiatives
Experience supporting system upgrades, testing cycles, or user acceptance testing (UAT).
Working on Financial systems projects/ the implementation of Financial systems
Experience with Onestream business rules and building cube views
Project management experience
Degree in Accounting, Finance, Information Systems, or a related field
Professional qualification or part-qualification (e.g., ACCA, CIMA) is an advantage
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